Marking-gage for buttonhole-machines.



E. F. LITTLEFIELD & H. A. DRINKWATER.

MARKING GAGE FOR. BUTTONHOLE MACHINES. APPLICATION FILED 11112.31, 1910 1,009,324. Patented Nov. 21, 1911.

UNITED STATES PA'lENT OFFICE.

EDWARD F. 'LITTLEFIELD AND HERBERT A. DRINKWATER, OF BELFAST; MAINE, ASSIGN- 03$ TO THE REECE BUTTON HOLE MACHINE COMPANY, OF BOSTON, MASSACHU- SETTS, A CORPORATION OF MAINE.

MARKING-GAGE FOR BUTTONHOLE-MACHINES.

Specification of Letters Patent.

Patented Nov. 21, 1911.

Application filed March 31, 1910. Serial No. 552,643.

.To all whom it may concern;

Be it known that we, EDWARD F. LITTLE- riniin and llnnnnn'r A. DRINKWATER, citizens of the United States, residing at Belfast, in the county of \Valdo and State of Maine, have invented certain new and useful I111- provements in h larking-Gages for Buttonhole-h lachincs; and we do declare the following to he a fulljclear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in marking ga es for button hole machines.

One. object of the invention is to provide an attachment of this character adapted to be applied to the cutter ltlYQldlf' a button hole sewing machine whereby the point for cutting the next hole will be automatically marked as each of the holes is cut.

Another object is to provide a of this character adapted to be adjusted for marking holes at ditl'crent distances apart.

\Vith the foregoing and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings, I1igmre 1 is a perspective view of so much of the button hole stitching machine as ntwessarvtu illustrate the application of the invention; Fig. is a. perspective view of the de\ "2* removed from the machine; Fig. 3 is a vcrtical sectional view taken on a line with the centc rof the adjustable cylinder containing the gage scale. I

In the embodiment. of the invention we provide a supporting frame 1 having on one end a clamping member 2, which is adapted to be engaged with the cutter lever 3 of the buttonhole sewing machine. The clamping member 2 is here shown and is preferably of substantially inverted U-form and hooked over the upper edge of the lever 3 and is secured thereto by clamping screws 4:. Slidably mounted on the base 5 of the gage is a carriage. (3, to which is pivotally a ttachcd the holder 7 of themar ing point 8. The holder 7 is pivotally connected to the carriage by a knuckle joint 9, and said. holder is yieldingly held in operative position by a coiled spring 10, one end 1 l i v i l l i l i l l i i i l l l l 1 l i v 1 I of which is connected to the holder and the 5 opposite end to the carriage, as shown.

The carriage G is provided with a threaded passage with which is engaged an adjusting screw 11 revolubly mounted in the frame of the gage, and which is provided on one end with a. milled operating head 12. By turning the screw in one direction or the other, the carriage may be adjusted back and forth across the frame to bring the marking point to the desired position. (in the carriage is secured an upwardly projecting indicating finger 13 which is adapted to coact with a series of gage scales to indicate the position to which the marking point is to be adjusted.

The gage scales are preferably arranged in longitudinal series on the outer surface of the scale cylinder 14, which is fixedly mounted on a shaft which is revolubly mounted in the arms of the frame 1 and has on one end a milled operating head 16, 7 5 whereby the shaft may be turned to bring the desired series of gage marks opposite to the finger 13. On the/shaft 15 between one end of the cylinder 14: and the adjacent side of the frame is arranged a coiled spring 17, the tension of which is applied to the roller whereby the opposite end of the same is yieldingly held in locked engagement with a stop pin 18 formed on the adjacent arm of the frame 1, said pin being adapted to engage one of an annular series of sockets or recesses 19 formed in the a djaccnt end of the cylinder as shown. By thus fastening the cylinder in place, the latter may be held at any adjusted positionwith the desired series of scale marks opposite to the pointer 13.

in the operation of the device after the cylinder has been adjusted to bring the desired series of scale marks opposite to the indi-ating finger, the latter is adjusted to the proper division on said scale by the screw 11, thus bringing the marking point to the desired position for spacing oil the button holes. 7 I

,From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a. more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention as defined in the appended claims.

Having thus described our invention, what we claim is:-

1. In a marking gage for button hole sewing machines, a supporting frame, means to secure said frame to the machine, a carriage slidablymounted in said frame, a marking point having a yielding pivotal connection with said carriage, an adjusting screw arranged in said frame and having a threaded engagement with "the carriage whereby the latter may' be adjusted to bring the marking point to thedesired position, a gaging scale cylinder revolubly n'iounted in the frame, said cylinder having arranged thereon series of division marks, and means to lock said cylinder in its adjusted position, r

E in a marking gage for button hole sewing machines, a supporting frame, a carriage slidahly mounted in said frame, an ad- 'nslin screw connected withsaid carria e whereby the latter may he shifted back and :t'orih across the frame, a markingi point holder having a knuckle joint connection with said ca'rriage,'a spring to yieldingly hold said holder in operative position, amarking point arranged in said holder, a pointer arranged on said carriage, a cylinder revolubly mounted in said frame, said cylinder l'laving arranged thereon series of graduated gage divisions or scale marks, and means to hold said cylinder in its adjusted position with one of said series of graduation marks opposite to said pointer.

3. In a marking gage for button hole sewing machines, a supporting frame, means to secure said frame to the button hole machine, a carriage slidably mounted on said frame, means to adjust said carriage, a marking point pivotally secured to the carriage, a spring to yieldingly hold said point in position, a pointer arranged on said car-- riage, a cylinder having arranged thereon series oi division marks, said cylinder having in one end a series of recesses or sockets, a locking pin adapted to engage said sockets and thereby hold said cylinder in its adjusted position, and a spring engaged with said cylinder to hold the latter in locked engagement wit-h said stop pin.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

EDW'ARD F. LITTLEFIELD.

HERBERT AI DRINKWATER.

Witnesses: I

WALTER C. SHAW,

BENJ. L. TU'rrLE. 

